My name didn't sound serious when combined with my maiden name (bit rhymey and silly) and its amazing the difference in the reception you get when you can make your name sound like you mean difference (like I can now with my married name). I know its surnames but the surnames made how my first name sound come across differently - one was a bit silly and current one can sound like a headmistress if you say it in the right tone - v useful!

I think that flower based names are either cheerful and friendly or very serious.I'd put names like Daisy and Rosie in the first category and names like Iris and Primrose in the second but I might be influenced by the people I know with these names so I could be talking bollocks.

I do not think that popularity or normality changes a name and makes it serious. Tracys still didn't sound serious even when there were tonnes of them! Daisy will still sound like Daisy even if you meet 10 of them a day!